I know many "small" eth miners with custum rigs they stopped mining eth in the past months because of the profitability is not there anymore
they switched either to raptoreum, chia/ chives or looking for alternative or switched to pos / masternodes coins.
Already? That's lame, right now ETH mining is still profitable, a 30MH will earn you 1.27$ today I don't see reasons to shut down your rigs right now, not until 30MH earns 0.50$ per day, raptoreum is CPU mining coin and it sucks, chia is even worst the cost of Terabyte space is too high for mining, a 100TB will earn you 3$ per day do you know how much 100TB costs?
The Guy i know into chia / chives got a bunch of entreprise grade drives 200tb for cheap on the blackmarket
Same for cpu he gathered cpus and motherboards there and there and has spare cpus.
And can always use the drive for something else.
1$ a day mean 30$ a month doesnt worth the hassle of mannaging a rig with all the heat and noise i guess.
At least hard drive is more quiet and easier to mannage he also target maybe filecoin or other.